Explanation:
Where are the ldaigrams???
Energy is passed from organisms at one trophic level to organisms in the next trophic level. ... Energy is an open system: flows from the sun to the earth and then out for the earth as heat. What is a trophic level? The feeding positions in a food chain or web are called trophic levels
Answer:
22510.8J
Explanation:
Given parameters:
Mass of lead = 4.68kg
Initial temperature = 25°C
Final temperature = 62°C
Unknown:
The heat needed to cause this temperature change = ?
Solution:
To solve this problem, we use the expression below:
H = m c Ф
H is the quantity of heat
m is the mass
c is the specific heat capacity
Ф is the temperature change
So;
Specific heat capacity of lead = 130J/kg°C
Insert the parameters and solve;
H = 4.68 x 130 x (62 - 25) = 22510.8J
Since the biker is moving at constant speed
so we will have

here we know that

time = 4 second
now we have

now at the top point it feels free fall
so it is




so height of the bike at the top is same as diameter


Yes it will hurt on falling from this height
Convection currents in the mantle